the requirements (penalty for sellers in case reserve price is not reached) respects the basic principle of Bido (let the market decide about the price) and should allow to keep out poor quality domains or outrageous reserve prices for average domain names.
It will be interesting to see what the lowest reserves are allowed vs. the predicted selling price. Will Bido allow a $100 reserve on what might sell for $300? If so, they'll only make a total of $24 for the sale...and a mere $3 if it doesn't. Not good.
Plus, this will only work if the reserves are quite a bit lower than what someone (Bido?) considers what will be the expected selling price. As seen from some of the domains offered lately, selling prices are not only very subjective, but lower now than most times.
Anyone who sets a $1000 reserve on a domain, better be sure the domain is truly worth more than that (I'd say at least double to get interest), and Bido better be sure of that, too. Otherwise, the owner is out $30 when it doesn't sell, and Bido only makes a paltry $30 for a day's listing. $30 per day on a no-sale reserve isn't going to cut it.
So now, everything will come down to Bido's expertise at predicting the selling price. That's the only way they can hope to offer any domains that will sell for above the reserve, and the only way they are going to make enough money to stay in business.
Multiple auctions per day might help increase Bido's daily revenue, or at least cut their daily losses. Unless the single domains are worth $xxxx and above, how else will they make any money?